Where to train at level 135?

I was training at Dragons in Leafre and it was awesome, but now, it's getting slower and boring. Like 0.01% per monster.I've tried every dragon in Leafre (Rexton, Brexton, Wyverns...). I don't think I can go to Skeles?
So where should I train now?

Well, to start off, if you have Windows 7 or Vista, make sure you are aware that you have to toggle graphics (System->System menu->Graphics)
Make sure you have 4 OTHER PEOPLE that are on in your expedition.

When you go in, spawn Zakum.
Once he's spawned, hug the left wall and count to 15 slowly
Once that's done, start attacking WHILE NEAR THE WALL. There will be a platform under the NPC inside Zak's Altar.
Stay behind the little chain, so you won't get cursed.

Preperation:
You must have all the Prequests done, you must have 1 Eye of Fire, you should bring 100+ Holy Waters/All Cures, bring sufficient pots (HP and MP)